israel said enough is enough. the president has clearly stated as rightly he should, that hamas' behavior in ghana is unacceptable. was the israeli response appropriate? >> the israeli response was appropriate and far less violent than would be justified. the principal of proportionality in international law does not mean that you have to do only what the other side did. it means your response must be limited to what is proportional to the necessity to stop the aggression. the aggression is the firing of rockets. whatever is necessary to get hamas to do that is legal under international law. >> eliot: it is also worth repeating that israel's first strike was against known terrorist leader and subsequent strikes are against missile launching entities themselves is hamas getting more aggressive because it has greater support from egypt? do you see that correlation? >> i think one has to assume that. i think there are some other groups now to hamas' more extreme flank that are pressing it. that they're under some pre